66733335563 has 2 divisors, whose sum is σ = 66733335564. Its totient is φ = 66733335562.

The previous prime is 66733335517. The next prime is 66733335577. The reversal of 66733335563 is 36553333766.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66733335563 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (66733335583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33366667781 + 33366667782.

It is an arithmetic number, because the mean of its divisors is an integer number (33366667782).

Almost surely, 2^66733335563 is an apocalyptic number.

66733335563 is a deficient number, since it is larger than the sum of its proper divisors (1).

66733335563 is an equidigital number, since it uses as much as digits as its factorization.

66733335563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9185400, while the sum is 50.

The spelling of 66733335563 in words is "sixty-six billion, seven hundred thirty-three million, three hundred thirty-five thousand, five hundred sixty-three".